I actually think Disney is going to go back, 4k scan the original film since the SE would be an upscale to get it to 4k ( I think). They will clean that up and release it. From there, I could see George and Disney working together to create a new Special Edition with updated SFX/CGI to make all their ‘new canon’ fit better.
Disney has no reason to every work with George again and they wouldn’t be stupid enough to anyway.